[Bug 877441] Re: can't do-release-upgrade

[sim909]

Could this be a duplicate of Bug #873883 ?

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https://bugs.launchpad.net/bugs/877441

Title:
  can't do-release-upgrade

Status in “update-manager” package in Ubuntu:
  Incomplete

Bug description:
  Impossibile calcolare l'avanzamento

  An unresolvable problem occurred while calculating the upgrade: 
  E:Error, pkgProblemResolver::Resolve generated breaks, this may be 
  caused by held packages. 

  This can be caused by: 
  * Upgrading to a pre-release version of Ubuntu 
  * Running the current pre-release version of Ubuntu 
  * Unofficial software packages not provided by Ubuntu 

  Se nessuna delle precedenti è la causa, segnalare questo problema 
  tramite il comando «ubuntu-bug update-manager» da terminale. 

  
  Ripristino dello stato originale del sistema

  Interruzione
  Reading package lists... Done    
  Building dependency tree          
  Reading state information... Done
  Building data structures... Done 
  === Command detached from window (Tue Oct 18 15:50:21 2011) ===
  === Command terminated with exit status 1 (Tue Oct 18 15:50:21 2011) ===

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: update-manager 1:0.150.3
  ProcVersionSignature: Ubuntu 2.6.38-11.50-server 2.6.38.8
  Uname: Linux 2.6.38-11-server x86_64
  NonfreeKernelModules: nvidia
  Architecture: amd64
  Date: Tue Oct 18 15:46:35 2011
  DpkgHistoryLog.txt:
   
  DpkgTerminalLog.txt:
   
  GConfNonDefault: /apps/update-manager/check_new_release_ignore=
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=it_IT:en
   PATH=(custom, no user)
   LANG=it_IT.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  UpgradeStatus: Upgraded to natty on 2011-10-18 (0 days ago)

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